5A Which pipes are left (water pipe), middle (oil pipe) and right (water) beside the engine throttle idle control valve?

Do you mean the two black rubber pipes under the idle valve? In my impression, these two pipes are a pair of water pipes and cooling passages of the engine block, which are used to heat the intake air. There seems to be a thin iron pipe connected to the intake manifold. If I remember correctly, if there is an error in the vacuum line of the intake pressure sensor, it can be pointed out with the attached figure.